WANTED - RAM for A3000 (ZIII, ZIPs or X-calibur for A3640)

[Zac67]

icbrkr wrote:
... and was asked if I wanted FPM's or EDOs.

:-o Never heard of EDO ZIPs - I thought they only exist on PS/2 SIMMs and as (very rare) SOJs...

[icbrkr]

Well... hate to be the bearer of bad news and such.

I got the ZIP chips in the mail today.  They are as described, ZIP chips that look like they should fit in my A3000.  And they do.  But that's about as far as it goes.

First off, let me just say the person who thought adding ZIP chips to a motherboard should be shot.  I broke a few off the bat.

Once I got the hang of it, I filled Bank 1 up.  The 3000 said "Can't get RAM" or something odd.  So I double checked chips, replaced some, etc.  It booted yellow.  Tried again.  This time it booted to a Guru screen (8003 ?).  After a few hours of this, I threw in the towel and figured I'd try something else.  $15 down the drain, but really it's not a big deal.

[Zac67]

icbrkr, sad to hear it doesn't work out - what exact kind of ZIPs are they? 4x1M are usually ..4400 (fp) or ..4402 (sc) at the  end.

[Tahoe]

@icbrkr:

I could try them on a Octagon SCSI controller and a MegaMix II RAM card? They both use ZIP chips...

[adz]

Any markings on the chips at all???

[jiffydos]

I never heard back...  and it looks like they are worthless anyhow.

There is currently a set on Ebay, however.

[icbrkr]

There's a couple different manufacturers here, I tried to keep the bank as all 1 maker:

KM44C1000Z-8
HM511000AZP-8
MCM54000AZ80

Looks like I'll need to slap in some sort of different memory card or get an accelerator with standard slots

[Zac67]

icbrkr wrote:
KM44C1000Z-8
HM511000AZP-8

Definitely 1x1M - no use in a 3k, runs only 4x256K or 4x1M

MCM54000AZ80

Dunno that one, might be 1x1M also or maybe 1x4M - do you have a full bank of these?

[icbrkr]

Well.. that would explain alot, eh?  I specifically asked for 1x4s.  Oh well, live and learn.

[Zac67]

Got to correct myself: KM44C1000Z-8 is 4x1M - they should work!!

4x1M per manufacturer:
MCM514400 Motorola
UPD424400 NEC
MSM514400 OKI
KM44C1000 Samsung
TI44400   TI
TC514400  Toshiba
MB814100  Fujitsu
GM71C4100 Goldstar
HM514100  Hitachi
HY514100  Hyundai
MT4C1004  Micron
M5M44100  Mitsubishi
not all available as ZIPs, of course - never knew there where that many different names...

Now, where did you get those at? ;-)

[jkonstan]

where did you find surplus zip dram (pulls) for A3000 ?

 :-)

[Oli_hd]

Mmm ZIP ram, linky please

(Dont care to much about it being 1x1 or 4x1, fun will follow regardless)

I wonder what prices the component sourcing sites would give for pulls, I will have to look at that some time